L7808ACV-DG

Product Overview

Category: Voltage Regulator
Use: To regulate and stabilize voltage in electronic circuits
Characteristics: High precision, low dropout voltage, thermal shutdown protection
Package: TO-220
Essence: Linear voltage regulator
Packaging/Quantity: Tape and reel, 2,500 units per reel

Specifications

• Output Voltage: 8V
• Input Voltage Range: 10V to 35V
• Dropout Voltage: 2V (typical)
• Output Current: Up to 1.5A
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.3% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L7808ACV-DG voltage regulator has three pins:

1. Input (Pin 1): Connects to the input voltage source.
2. Ground (Pin 2): Connected to the ground reference of the circuit.
3. Output (Pin 3): Provides the regulated output voltage.

Functional Features

• High precision: The L7808ACV-DG offers a precise and stable output voltage of 8V, ensuring accurate performance in various applications.
• Low dropout voltage: With a typical dropout voltage of only 2V, this regulator can operate efficiently even when the input voltage is close to the desired output voltage.
• Thermal shutdown protection: The device includes built-in thermal shutdown protection, which prevents damage due to excessive heat by shutting down the regulator temporarily.

Advantages and Disadvantages

Advantages: - High precision output voltage - Low dropout voltage for efficient operation - Thermal shutdown protection for enhanced reliability - Wide operating temperature range

Disadvantages: - Limited output current capacity (up to 1.5A) - Requires external capacitors for stability

Working Principles

The L7808ACV-DG is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage. The device operates by dissipating excess energy as heat, which is why it has a dropout voltage.

Detailed Application Field Plans

The L7808ACV-DG is commonly used in various electronic applications, including:

1. Power supplies: It can be used to regulate the voltage in power supply circuits, ensuring a stable and reliable power source.
2. Automotive electronics: The regulator finds applications in automotive systems, such as engine control units, where precise voltage regulation is crucial.
3. Industrial control systems: It is suitable for regulating voltage in industrial control systems, providing consistent power to sensitive components.
4. Consumer electronics: The L7808ACV-DG can be utilized in devices like audio amplifiers, where accurate voltage regulation is essential for optimal performance.

Detailed and Complete Alternative Models

1. LM7808: This is a popular alternative from Texas Instruments, offering similar specifications and pin configuration.
2. MC7808: Manufactured by ON Semiconductor, this model provides comparable performance and compatibility with the L7808ACV-DG.
3. UA7808: Another alternative from Texas Instruments, known for its reliability and wide operating temperature range.

These alternative models can be considered based on specific requirements and availability.

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